Removing airbag unit (M Sport steering wheel)

Precondition

Equipment version:
- M Sport steering wheel

WARNING: Pyrotechnic components.
Danger! Immobilization period-threatening injuries!

All work on pyrotechnic parts may be carried out by technically experienced and appropriately trained personnel only.
Replace any damaged part or ones that have been dropped.
For additional information see: SAFETY REGULATIONS FOR HANDLING COMPONENTS WITH GAS GENERATORS .

WARNING: Airbag unit.
Danger! Immobilization period-threatening injuries!

Before performing any work on the airbag, always disconnect the battery ground lead from the battery.
Airbag unit may only be set down with the cushion (airbag itself) facing upwards.
For additional information see: SAFETY REGULATIONS FOR HANDLING COMPONENTS WITH GAS GENERATORS .

NOTE: TECHNICAL INFORMATION
After replacing the airbag unit (M Sport steering wheel) or possibly converting the standard steering wheel and airbag unit on the M Sport steering wheel, a software update or a programming/coding via ISTA must be performed.

NOTE: TECHNICAL INFORMATION
The steering wheel and horn plate must be replaced if the airbag unit has been deployed.
Check all steering wheel attachments (such as switches, cover, shift paddles, wiring harness) for damage and replace if necessary!
For additional information see: PROCEDURE AFTER AIRBAG DEPLOYMENT AS RESULT OF AN ACCIDENT .

Preliminary work

Refer to DEACTIVATING THE 48 V ELECTRICAL SYSTEM .
Refer to DEACTIVATING ELECTRICAL SYSTEM .

WARNING: Airbag unit.
Danger! Immobilization period-threatening injuries!

Before performing any work on the airbag, always disconnect the battery ground lead from the battery.
Airbag unit may only be set down with the cushion (airbag itself) facing upwards.
For additional information see: SAFETY REGULATIONS FOR HANDLING COMPONENTS WITH GAS GENERATORS .

NOTE: RISK OF DAMAGE
Damage to the steering wheel.
Incorrect handling of the tool may damage the steering wheel.

Make sure the position (angle and inclination) of the tool is correct.
When unlocking, do not use "levering" action. Instead, press in the Torx screwdriver toward the center of steering wheel only.

NOTE: Perform the steps on the left and right side.

Localize the mark (1) for unlocking the airbag unit on the steering wheel by feeling.

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NOTE: Perform the steps on the left and right side.

Carefully cut the mark (1) with a knife (2) to approx. 4 mm length.

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NOTE: TECHNICAL INFORMATION
Different variants may be installed depending on the vehicle equipment.

For vehicles with shift paddles (2) from CFRP, use a Torx socket T15 (1) for unlocking the airbag unit.

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NOTE: To provide a better overview: Schematic diagram with airbag unit removed.

Insert the Torx socket T15 (1) to the top at an angle until a springy resistance can be felt.
Press the Torx socket T15 (1) straight in arrow direction to the center of the steering wheel to unlock the wire spring (2) or the airbag unit (A).

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Press the wire spring in with the Torx socket T15 (1) in arrow direction and lift the airbag unit (2) to the unlocked side.
Repeat the process on the left side and carefully release the airbag unit (2) from the steering wheel.

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Unlock plug connection (1) and disconnect.
Remove the airbag unit (2).

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